采用阳离子取代基团为H、Na、Al的有机磷酸酯和有机磷酸盐作为成核剂加入聚丙烯(PP)中,研究了它们对PP结晶行为、力学性能和透明性能的影响。结果表明:当成核剂添加量均为0.2%时,有机磷酸酯、钠盐和铝盐使PP的结晶温度分别提高了0.94、13.8和3.52℃,弯曲模量则分别提高了5.36%、38.3%和8.98%,其中钠盐成核PP样品的雾度值最低。由此可知,钠盐的成核效果最好,而有机磷酸酯和铝盐对PP的成核作用不明显。 Addition of organic phosphate and organic phosphate with H, Na and Al as cation nucleating agents into polypropylene (PP) with cationic substituent group, their effects on the crystallization behavior, mechanical properties and transparency of PP were studied. The results showed that when the amount of nucleating agent is 0.2%, the organophosphates, sodium salts and aluminum salts increase the crystallization temperature of PP by 0.94, 13.8 and 3.52 ℃, respectively, while the flexural modulus increase by 5.36% and 38.3% And 8.98%, respectively, of which sodium salt nucleated PP samples had the lowest haze value. It can be seen that the nucleation effect of sodium salt is the best, while the organic phosphate and aluminum salt nucleation of PP is not obvious.